A Song that Teaches How to Dissociate?

I Whistle a Happy Tune (From King and I)
By Richard Rogers and Oscar Hammerstein II (1956)

Anna
Whenever I feel afraid
I hold my head erect
And whistle a happy tune
So no one will suspect
I'm Afraid.

While shivering in my shoes
I strike a careless pose
And whistle a happy tune
And no one ever knows I'm afraid.

The result of this deception
Is very strange to tell
For when I fool the people I fear
I fool myself as well!

I whistle a happy tune
And ev'ry single time
The happiness in the tune
Convinces me that I'm not afraid.

Make believe you're brave
And the trick will take you far.
You may be as brave
As you make believe you are
[Louis and Anna whistle the tune of
"Make believe you're brave
And the trick will take you far".]

Anna
You may be as brave
As you make believe you are!

Louis
[Spoken]
I think it is a very good idea, mother, a very good idea!

Anna
Yes, it is a good idea, isn't it!

Louis
I do think I shall never be afraid again!

Anna
Good!!!
[Sung]

Louis and Anna
The result of this deception
Is very strange to tell
For when I fool the people I fear
I fool myself as well!
I whistle a happy tune
And ev'ry single time
The happiness in the tune
Convinces me that I'm not afraid.

Make believe you're brave
And the trick will take you far.
You may be as brave
As you make believe you are-
You may be as brave
As you make believe you are!